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Finding the Fourth Proportional to 780,783, 1,077,480.54 and 423,087

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Solution

The fourth proportional to 780,783, 1,077,480.54 and 423,087 is: 583,860.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,783 : 1,077,480.54 = 423,087 : x
  2. Step 2: Convert to fraction form
    780,783/1,077,480.54 = 423,087/x
  3. Step 3: Cross multiply
    780,783x = 1,077,480.54 × 423,087
  4. Step 4: Simplify right side
    780,783x = 455,868,009,226.98
  5. Step 5: Solve for x
    x = 455,868,009,226.98/780,783
  6. Step 6: Final answer
    x = 583,860.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.